Functionality
Intercom function, Monitoring an entrance
Calling with neighboring houses
Door lock release
Intercom with guide station
OSD function
Volume & Brightness / Contrast control
Visitor photo save(option) 

Specifications
 Display : 7 inch Color TFT-LCD
Power : AC90V~240V, 50Hz/60Hz
SIZE : 320(W)*1180(H)*35(D)
Installation : Surface well mount type
Conversation time : Waiting time(about 30 seonds), Operating(about 60 seconds)
Wiring : Front door 4 Cable(polar), Guard-room 2 cable(nonpolar) Switch 2 cable(polar)